🏷️ Basic Information

Make:

Yamaha

Model Line:

ATC Tri-Moto

Specific Models:

Production Years:

1983, 1984, 1985, 1986, 1987

Atv Type:

All-Terrain Vehicle (ATV)

👋 Introduction

Target Audience:

Yamaha YTM 225 owners, DIY mechanics, repair shops

Key Differentiators:

Improved PDF features (bookmarks, search), full factory content, broad OS compatibility, direct download without compression

Value Proposition:

Comprehensive, easy-to-use, authoritative repair information for Yamaha YTM 225 models, backed by a satisfaction guarantee.

📋 Manual Details

Manual Title:

Yamaha YTM 225 DRS/DRN/DXK Repair Manual [Improved] PDF Download

Manual Type:

Factory Repair Manual

Manual Scope:

Complete service, repair, and overhaul instructions

Page Count Estimate:

Hundreds of pages

Language:

English

File Format:

PDF

Digital Features:

Compatibility:

Delivery Method:

Instant Download

Ease Of Use:

Easy to navigate, no digging through hundreds of pages, not a zip file

📖 Manual Coverage

General Information:

Included

Specifications:

Included

Periodic Checks Adjustments:

Included

Periodic Maintenance Tune Up:

Included

Chassis:

Included

Engine:

Included

Suspension:

Included

Steering Frame:

Included

Cooling System:

Included

Fuel Injection System:

Included

Controls Indicators:

Included

Electrical System:

Included

Wiring Diagrams:

Included

Troubleshooting:

Included

Disassembly Assembly:

Complete step-by-step instructions

Engine Overhaul:

Detailed procedures for engine rebuild

Routine Maintenance:

Tune-ups, adjustments, and checks

Component Repair:

Instructions for all major components

Depth Level:

Factory-level detail, suitable for professional mechanics

📊 Manual Specifications

File Type:

PDF (Portable Document Format)

Printability:

Printable pages as needed

Binding:

Not applicable (Digital PDF download)

Paper Type:

Not applicable (Digital PDF download)

⚙️ Engine Specifications

Engine Type:

Air-cooled, 4-stroke, SOHC

Displacement:

223cc (Verify specific model for exact figure, but commonly associated with this engine family)

Bore X Stroke:

Typically around 66.0 mm x 65.0 mm for 223cc engines (Manual will provide exact)

Compression Ratio:

Estimated 9.5:1 to 10.5:1 (Manual will provide exact)

Fuel Delivery:

Carburetor (Specific model/year may have different configurations, manual covers 'Fuel Injection System' which might be a slight misnomer or refer to ignition system details)

Fuel Type:

Unleaded gasoline (Manual will specify octane rating)

Ignition Type:

CDI (Capacitor Discharge Ignition)

Oil Type:

Yamalube or equivalent motorcycle/ATV oil (API SG or higher, SAE 10W-30 recommended, manual will confirm)

Oil Capacity:

Approx. 1.7-1.9 liters (Manual will confirm exact capacity)

🔧 Transmission

Transmission Type:

5-speed manual transmission with automatic clutch (or shaft drive with specific transmission setup, YTM models are often shaft drive)

Optional Features:

Reverse gear

Drive Type:

Shaft Drive (Common for this era and model)

📐 Dimensions

Length Overall:

Varies by model, typically around 1900-2000 mm (Manual will provide exact figures)

Width Overall:

Varies by model, typically around 700-800 mm (Manual will provide exact figures)

Height Overall:

Varies by model, typically around 1000-1100 mm (Manual will provide exact figures)

Dry Weight:

Approximately 150-170 kg (Manual will confirm specific model dry weight)

Fuel Capacity:

Approx. 9-11 liters (Manual will specify exact fuel tank capacity)

🛡️ Safety Features

Safety Standards:

Designed to meet applicable ATV safety regulations of its era. Manual details any specific certifications.

Braking System:

Hydraulic disc brakes front and rear (Manual details specific caliper, rotor, and fluid type - DOT 3/4 recommended)

Lighting System:

Headlight, taillight, brake light (Manual covers bulb types and electrical troubleshooting)

💡 Technology Features

Display Features:

Basic indicator lights (neutral, oil pressure, high beam). No advanced infotainment.

Assistance Features:

None (This era of ATV did not feature electronic driver assistance systems).

Connectivity Options:

None.

🔧 Maintenance

Oil Change Interval:

Every 1000 km or 6 months, whichever comes first (Manual will provide precise schedule)

Spark Plug Replacement:

Every 2000 km or annually (Manual will specify exact interval and plug type, e.g., NGK CR9E)

Air Filter Cleaning:

Every 500 km or as needed based on operating conditions (Manual will detail cleaning and oiling procedure)

Valve Clearance Adjustment:

Every 4000 km or 2 years (Manual will provide correct clearances and procedure)

Brake Fluid:

DOT 3 or DOT 4 brake fluid (Manual will specify)

Gear Oil:

Yamalube or equivalent GL-4 gear oil, SAE 80 (Manual will specify type and capacity)

Common Wear Points:

Carburetor performance degradation, suspension bushing wear, electrical connector corrosion, drive shaft U-joints, starter motor issues.

Troubleshooting Guidance:

Manual provides specific diagnostic steps for common and uncommon problems.

📚 Vehicle History

Yamaha Atv Legacy:

Yamaha has a long-standing history of innovation in the ATV market, beginning with the iconic 3-wheelers.

Ytm Series:

The YTM series represented Yamaha's transition and development in the burgeoning ATV market, building on the ATC platform and introducing features that would lead to 4-wheelers.

Production Period:

The YTM 225 line was produced during a period of significant growth and regulatory scrutiny for ATVs in the mid-1980s.

🏆 Awards & Recognition

Market Reputation:

Yamaha ATVs of this era were generally well-regarded for their reliability and performance within the recreational and utility segments.